The instrumental arrangements in this series are completely compatible with each other and can be played together or as solos. A piano accompaniment collection is available, or players may use the included play-along CD to accompany themselves. Each song on the CD also includes a demo track, which features a live instrumental performance. Titles include: Double Trouble (Harry Potter and the Prisoner of Azkaban); Superman Theme (Superman Returns); Wonka's Welcome Song (Charlie and the Chocolate Factory); Into the West (The Lord of the Rings: The Return of the King) and more.